package com.monika.main.system.aspectj;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.filter.SimplePropertyPreFilter;
import com.monika.main.system.annotation.WebLog;
import com.monika.main.system.domain.entity.LoginUser;
import com.monika.main.system.enums.BusinessStatus;
import com.monika.main.system.enums.HttpMethod;
import com.monika.main.system.factory.AsyncFactory;
import com.monika.main.system.factory.AsyncManager;
import com.monika.main.system.factory.LogManager;
import com.monika.main.system.log.entity.OperateLog;
import com.monika.main.system.util.*;
import org.apache.commons.lang3.ArrayUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.core.NamedThreadLocal;
import org.springframework.stereotype.Component;
import org.springframework.validation.BindingResult;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Collection;
import java.util.Map;
import java.util.Objects;

/**
 *
 * Author whh
 * Date 2023/04/15/ 23:57
 * <p>日志注解的切面</p>
 */
@Aspect
@Component
public class AnnotationLogAspect {


    /** 排除敏感属性字段 */
    public static final String[] EXCLUDE_PROPERTIES = { "password", "oldPassword", "newPassword", "confirmPassword" };

    /** 计算操作消耗时间 */
    private static final ThreadLocal<Long> TIME_THREAD_LOCAL = new NamedThreadLocal<Long>("Cost Time");

    /**
     * 处理请求前执行
     */
    @Before(value = "@annotation(controllerWebLog)")
    public void boBefore(JoinPoint joinPoint, WebLog controllerWebLog)
    {
        TIME_THREAD_LOCAL.set(System.currentTimeMillis());
    }

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "@annotation(controllerWebLog)", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, WebLog controllerWebLog, Object jsonResult)
    {
        handleLog(joinPoint, controllerWebLog, null, jsonResult);
    }

    @AfterThrowing(value = "@annotation(controllerWebLog)", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, WebLog controllerWebLog, Exception e) throws Exception
    {
        handleLog(joinPoint, controllerWebLog, e, null);
        //将异常抛给全局异常处理器处理
        throw e;
    }

    protected void handleLog(final JoinPoint joinPoint, WebLog controllerWebLog, final Exception e, Object jsonResult)
    {
        try
        {
            // 获取当前的用户
            LoginUser loginUser = SecurityUtil.getLoginUserV2();
            // *========数据库日志=========*//
            OperateLog operLog = new OperateLog();
            operLog.setStatus(BusinessStatus.SUCCESS.ordinal());
            // 请求的地址
            String ip = IpUtil.getIpAddr();
            operLog.setOperIp(ip);
            operLog.setOperUrl(StringUtil.substring(ServletUtil.getRequest().getRequestURI(), 0, 255));
            if (loginUser != null)
            {
                operLog.setOperName(loginUser.getUsername());
            }

            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operLog.setMethod(className + "." + methodName);
            // 设置请求方式
            operLog.setRequestMethod(ServletUtil.getRequest().getMethod());
            // 处理设置注解上的参数
            getControllerMethodDescription(joinPoint, controllerWebLog, operLog, jsonResult);
            // 设置消耗时间
            operLog.setCostTime(System.currentTimeMillis() - TIME_THREAD_LOCAL.get());

            if (e != null)
            {
                operLog.setStatus(BusinessStatus.FAIL.ordinal());
                operLog.setErrorMsg(StringUtil.substring(e.getMessage(), 0, 2000));
            }
            // 保存数据库
            AsyncManager.me().execute(AsyncFactory.recordOper(operLog));
        }
        catch (Exception exp)
        {
            //日志AOP的异常就直接打印了
         LogManager.LOG().sys_common_log(AnnotationLogAspect.class).error(exp.getMessage(),exp);
        }
        finally
        {
            TIME_THREAD_LOCAL.remove();
        }
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param webLog 日志
     * @param operLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, WebLog webLog, OperateLog operLog, Object jsonResult) throws Exception
    {
        // 设置action动作
        operLog.setBusinessType(webLog.businessType().ordinal());
        // 设置标题
        operLog.setTitle(webLog.title());
        // 设置操作人类别
        operLog.setOperatorType(webLog.operatorType().ordinal());
        // 是否需要保存request，参数和值
        if (webLog.isSaveRequestData())
        {
            // 获取参数的信息，传入到数据库中。
            setRequestValue(joinPoint, operLog, webLog.excludeParamNames());
        }
        // 是否需要保存response，参数和值
        if (webLog.isSaveResponseData() && Objects.nonNull(jsonResult))
        {
            operLog.setJsonResult(StringUtil.substring(JSON.toJSONString(jsonResult), 0, 2000));
        }
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param operLog 操作日志
     * @throws Exception 异常
     */
    private void setRequestValue(JoinPoint joinPoint, OperateLog operLog, String[] excludeParamNames) throws Exception
    {
        Map<?, ?> paramsMap = ServletUtil.getParamMap(ServletUtil.getRequest());
        String requestMethod = operLog.getRequestMethod();
        if (!paramsMap.isEmpty()
                && (HttpMethod.PUT.name().equals(requestMethod) || HttpMethod.POST.name().equals(requestMethod)))
        {
            String params = argsArrayToString(joinPoint.getArgs(), excludeParamNames);
            operLog.setOperParam(StringUtil.substring(params, 0, 2000));
        }
        else
        {
            operLog.setOperParam(StringUtil.substring(JSON.toJSONString(paramsMap, excludePropertyPreFilter(excludeParamNames)), 0, 2000));
        }
    }

    /**
     * 参数拼装
     */
    private String argsArrayToString(Object[] paramsArray, String[] excludeParamNames)
    {
        String params = "";
        if (paramsArray != null && paramsArray.length > 0)
        {
            for (Object o : paramsArray)
            {
                if (Objects.nonNull(o) && !isFilterObject(o))
                {
                    String jsonObj = JSON.toJSONString(o, excludePropertyPreFilter(excludeParamNames));
                    params += jsonObj + " ";
                }
            }
        }
        return params.trim();
    }

    /**
     * 忽略敏感属性
     */
    public PropertyPreExcludeFilter excludePropertyPreFilter(String[] excludeParamNames)
    {
        return new PropertyPreExcludeFilter().addExcludes(ArrayUtils.addAll(EXCLUDE_PROPERTIES, excludeParamNames));
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    public boolean isFilterObject(final Object o)
    {
        Class<?> clazz = o.getClass();
        if (clazz.isArray())
        {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        }
        else if (Collection.class.isAssignableFrom(clazz))
        {
            Collection collection = (Collection) o;
            for (Object value : collection)
            {
                return value instanceof MultipartFile;
            }
        }
        else if (Map.class.isAssignableFrom(clazz))
        {
            Map map = (Map) o;
            for (Object value : map.entrySet())
            {
                Map.Entry entry = (Map.Entry) value;
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse
                || o instanceof BindingResult;
    }


    static final class PropertyPreExcludeFilter extends SimplePropertyPreFilter
    {
        public PropertyPreExcludeFilter()
        {
        }

        public PropertyPreExcludeFilter addExcludes(String... filters)
        {
            for (int i = 0; i < filters.length; i++)
            {
                this.getExcludes().add(filters[i]);
            }
            return this;
        }
    }
}
